i've had one on my wrist. They strapped me down on the operating table whatever, tieing both my arms down, and the last thing i remember is turning to my doctor and saying, "hey, look at me, i'm like Jesus on the cross!!"
the block the injected was cool as shit too, it basically made me not feel my left arm at all, like it didnt exist...which made me almost hit myself with it a few times...
all in all, it was kindof fun. The worst part is when you get changed, and your just sitting there waiting to get some drugs...once the drugs start flowing, its kind of fun